DE202020102909U1 - Gripping device for a stator of a housing - Google Patents

Abstract

Gripping device for a stator of a housing, characterized in that the gripping device has a mounting seat (1), a number of expanding jaws (2), a wedge support element (3) and a drive mechanism (4) which moves the wedge support element (3) up and down , wherein the wedge support element (3) is provided with a plurality of wedge blocks (31) at intervals in its circumferential direction, the thickness of the wedge block (31) increasing from top to bottom, the thickness of the expanding jaws (2) from above the side of the wedge block (31), which lies opposite the expanding jaws (2), is provided with a linear guide rail (32), the inner surface of the expanding jaws (2) being fitted with a sliding piece (2) which is adapted to the linear guide rail (32). 21) is provided, the drive end of the drive mechanism (4) being connected to an upper end of the wedge support element (3); wherein the wedge support element (3) driven by the drive unit can be moved upwards, whereby the interaction of the wedge block (31) with the expanding jaws (2) spreads the expanding jaws (2) in order to expand the stator and thus gripping the stator to effect.

Description

TECHNICAL AREA

The teachings belong to the technical field of automated devices and relate in particular to a gripping device for a stator of a housing.

STATE OF THE ART

In the assembly process of an electric motor, a stator is gripped, the stator having a cavity in the middle.

In the prior art, air injection sleeves are generally used which are inserted into the interior of the stator, a bellows being filled with compressed air in order to deform a thin copper plate.

After the thin copper plate has expanded outward and has a larger diameter, an expansion force is generated on the inner wall of the stator of the electric motor, whereby the gripping function is carried out.

• Erstens verwendet die ursprüngliche Vorrichtung eine von innen mit Luft aufblasbare Wellenhülse, die auf Grund der Anfälligkeit für den Druck der Gasquelle zu einer Instabilität der Kompression neigt, was die Gefahr einer relativen Verschiebung zwischen der Expansionshülse und dem Produkt während des Aufnehmens und des Niederdrückens des Produkts erzeugt, was dazu führt, dass die Einpresstiefe nicht leicht zu gewährleisten ist; zweitens verwendet die ursprüngliche Vorrichtung eine pneumatische innere Ausdehnungshülse, die aufgrund des elastischen schwebenden Kontakts am Innendurchmesser des Stators die Neutralität mindert, wodurch der thermische Mantel des Stators die Gehäuseinnenwand leicht zerkratzt, was zu Aluminiumabplatzungen führt und die Leistung des Elektromotors beeinträchtigt.

The disadvantages of the gripping method described above are:

• First, the original device uses an internally air-inflatable shaft sleeve which tends to be unstable in compression due to the susceptibility to the pressure of the gas source, with the risk of a relative displacement between the expansion sleeve and the product during product take-up and depression generated, which leads to the fact that the insertion depth is not easy to guarantee; second, the original device uses a pneumatic inner expansion sleeve which, due to the elastic floating contact on the inner diameter of the stator, reduces neutrality, causing the stator's thermal jacket to easily scratch the inner wall of the housing, resulting in aluminum flaking and adversely affecting the performance of the electric motor.

It is therefore necessary to develop a gripping device for a stator of a housing in order to overcome the disadvantages mentioned above.

CONTENT OF THE PRESENT TEACHING

The technical problem that the teachings primarily solve is to provide a gripping device for a stator of a housing.

A wedge support element is driven upwards by a drive mechanism in order to move spreading jaws apart, to automatically grasp the stator and to ensure the quality of the stator during the gripping process.

• Die vorliegenden Lehren stellen eine Greifvorrichtung für einen Stator eines Gehäuses bereit, wobei die Greifvorrichtung einen Montagesitz, Spreizbacken, ein Keiltragelement und einen Antriebsmechanismus, der das Keiltragelement nach oben und unten bewegt, umfasst, wobei das Keiltragelement mit einer Mehrzahl von Keilblöcken in Abständen in seiner Umfangsrichtung versehen ist, wobei die Dicke des Keilblocks von oben nach unten größer wird, wobei die Dicke der Spreizbacken von oben nach unten geringer wird, wobei die Seite des Keilblocks, die den Spreizbacken gegenüberliegt, mit einer Linearführungsschiene versehen ist, wobei die Innenfläche der Spreizbacken mit einem an der Linearführungsschiene angepassten Gleitstück versehen ist, wobei das Antriebsende des Antriebsmechanismus mit einem oberen Ende des Keiltragelements verbunden ist; wobei das Keiltragelement durch die Antriebseinheit angetrieben nach oben bewegbar ist, wobei durch das Zusammenwirken des Keilblocks mit den Spreizbacken die Spreizbacken gespreizt werden, um den Stator expandierend zu spannen und so ein Greifen des Stators zu bewirken.

In order to solve the technical problem mentioned above, a technical solution is used according to the present teachings, which comprises:

• The present teachings provide a gripping device for a stator of a housing, the gripping device comprising a mounting seat, expanding jaws, a wedge support member and a drive mechanism that moves the wedge support member up and down, the wedge support member having a plurality of wedge blocks at intervals in it Circumferential direction, the thickness of the wedge block increases from top to bottom, the thickness of the expanding jaws decreases from top to bottom, the side of the wedge block opposite the expanding jaws is provided with a linear guide rail, the inner surface of the expanding jaws is provided with a slider adapted to the linear guide rail, the drive end of the drive mechanism being connected to an upper end of the wedge support member; wherein the wedge support element is driven by the drive unit and can be moved upwards, whereby the interaction of the wedge block with the expanding jaws expands the expanding jaws in order to expand the stator and thus to cause gripping of the stator.

In a further development, the gripping device is also provided with a guide post in order to increase the ease of the up and down movement of the wedge support element, the wedge support element having a cavity in its center, the guide post being located in the cavity.

In a further development, the gripping device further comprises a mounting frame and a base, the expanding jaws being arranged between the base plate of the mounting frame and the base.

In a further development, a protective plate is arranged between adjacent expanding jaws.

In one development, the outer peripheral surfaces of the expanding jaws are arcuate surfaces.

In a further development, a delimitation block is arranged on an edge of the mounting frame, an axial delimitation of the stator by pressing the delimitation block against one top edge of the stator or a step surface on the stator circumference is reached.

In one development, three expanding jaws are provided, and three wedge blocks are also provided.

In a further development, the drive mechanism is a cylinder, the drive end of the cylinder being provided with a floating connection, a bottom plate of the mounting frame being provided with a through hole, an upper section of the wedge block passing through the through hole and being connected to the floating connection of the cylinder.

• Die vorliegenden Lehren umfassen einen Montagesitz, Spreizbacken, ein Keiltragelement und einen Antriebsmechanismus, der das Keiltragelement nach oben und unten bewegt, wobei das Keiltragelement mit einer Mehrzahl von Keilblöcken in Abständen in seiner Umfangsrichtung versehen ist, wobei die Dicke des Keilblocks von oben nach unten größer wird, wobei die Seite des Keilblocks, die den Spreizbacken gegenüberliegt, mit einer Linearführungsschiene versehen ist, wobei die Innenfläche der Spreizbacken mit einem an der Linearführungsschiene angepassten Gleitstück versehen ist, wobei das Antriebsende des Antriebsmechanismus mit einem oberen Ende des Keiltragelements verbunden ist; wobei das Keiltragelement durch die Antriebseinheit angetrieben nach oben bewegbar ist, wobei durch das Zusammenwirken des Keilblocks mit den Spreizbacken die Spreizbacken radial gespreizt werden, um den Stator expandierend zu spannen und so ein Greifen des Stators zu bewirken. Daher weisen die Lehren die folgenden Vorteile auf:
  • Erstens weist der Antrieb durch Verwendung einer Linearführungsschiene eine hohe Steifigkeit und einen geringen Abstand auf, und die Genauigkeit beim Wiederholen des Betriebs ist hoch; zweitens hat die Vorrichtung selbst eine bessere Steifigkeit und eine genauere Positionierung, da das verwendete Keiltragelement ausgetauscht werden kann, was eine einfachere Umstellung zur Anpassung an Statoren mit unterschiedlichen Innendurchmessergrößen ermöglicht; drittens weisen die Keilblöcke gute Selbsthemmungseigenschaften auf, wobei der Stator sich aufgrund der Keilblöcke im Verhältnis zu der Dehnungshülse kaum bewegt, wenn der Stator in das Gehäuse eingesetzt und mit Kraft beaufschlagt ist, und wobei, da die äußere Umfangsfläche der Spreizbacken der Vorrichtung eine ebene Bogenfläche ist, die Vorrichtung in stabilem Kontakt mit dem inneren Durchmesser des Stators stehen kann, um eine relativ große Reibungskraft zu erzeugen, sodass es nicht ohne Weiteres zu einer relativen Verschiebung kommt; da viertens das Antriebsende des Zylinders der Lehren mit einem Schwebeanschluss versehen sein kann, wird die Koaxialität des Keiltragelements mit dem Antriebsende des Zylinders sichergestellt, d. h. die Zentriergenauigkeit ist hoch und die Innenwand des Gehäuses des Elektromotors wird durch den Pressvorgang nicht leicht exzentrisch zerkratzt.

Advantageous effects of the teachings are:

• The present teachings include a mounting seat, expanding jaws, a wedge support member and a drive mechanism that moves the wedge support member up and down, the wedge support member being provided with a plurality of wedge blocks spaced apart in its circumferential direction, the thickness of the wedge block being greater from top to bottom the side of the wedge block opposite to the expanding jaws is provided with a linear guide rail, the inner surface of the expanding jaws being provided with a slide piece adapted to the linear guide rail, the drive end of the drive mechanism being connected to an upper end of the wedge support element; wherein the wedge support element driven by the drive unit can be moved upwards, whereby the interaction of the wedge block with the expanding jaws expands the expanding jaws radially in order to expand the stator and thus to cause gripping of the stator. Therefore, the teachings have the following advantages:
  • First, by using a linear guide rail, the drive has a high rigidity and a small distance, and the accuracy in repeating the operation is high; secondly, the device itself has better rigidity and more precise positioning, since the wedge support element used can be exchanged, which enables easier conversion to adapt to stators with different inner diameter sizes; thirdly, the wedge blocks have good self-locking properties, the stator barely moving due to the wedge blocks relative to the expansion sleeve when the stator is inserted into the housing and applied with force, and wherein the outer peripheral surface of the expanding jaws of the device has a flat arc surface is, the device can be in stable contact with the inner diameter of the stator to generate a relatively large frictional force so that there is not easily a relative displacement; Fourth, since the drive end of the cylinder of the gauges can be provided with a floating connection, the coaxiality of the wedge support element with the drive end of the cylinder is ensured, ie the centering accuracy is high and the inner wall of the housing of the electric motor is not easily eccentrically scratched by the pressing process.

The above description is only an overview of the technical solution of the present teachings and serves to clarify the technical means of the present teachings, which are implemented in accordance with the content of the description. The following is a detailed description of the preferred embodiments of the present teachings with reference to the accompanying drawings as follows.

Figure list

• 1 eine schematische Außenansicht der vorliegenden Lehren;
• 2 eine schematische Strukturansicht der vorliegenden Lehren;
• 3 eine schematische Strukturansicht eines Keiltragelements der vorliegenden Lehren;
• 4 eine radiale Schnittansicht eines jeweiligen Gleitstücks der vorliegenden Lehren; und
• 5 eine schematische Strukturansicht der Spreizbacken der vorliegenden Lehren.

Show it:

• 1 a schematic external view of the present teachings;
• 2nd a schematic structural view of the present teachings;
• 3rd is a schematic structural view of a wedge support member of the present teachings;
• 4th a radial sectional view of a respective slider of the present teachings; and
• 5 is a schematic structural view of the expanding jaws of the present teachings.

In the drawings, the parts have the following reference numbers: Assembly seat 1 , Expanding jaws 2nd , Slider 21 , Wedge support element 3rd , Wedge block 31 , Linear guide rail 32 , Cavity 33 , Drive mechanism 4th , Swimming connection 41 , Guide post 5 , Mounting frame 6 , Base plate 61 , Through hole 611 , Delimitation block 62 , Base 7 and protective plate 8th .

DETAILED DESCRIPTION

• Eine Greifvorrichtung für einen Stator eines Gehäuses, wie in den 1 bis 5 gezeigt, umfasst einen Montagesitz 1, Spreizbacken 2, ein Keiltragelement 3 und einen Antriebsmechanismus 4, der das Keiltragelement nach oben und unten bewegt, wobei das Keiltragelement mit einer Mehrzahl von Keilblöcken 31 in Abständen in seiner Umfangsrichtung versehen ist, wobei die Dicke des Keilblocks von oben nach unten größer wird, wobei die Dicke der Spreizbacken von oben nach unten geringer wird, wobei die Seite des Keilblocks, die den Spreizbacken gegenüberliegt, mit einer Linearführungsschiene 32 versehen ist, wobei die Innenfläche der Spreizbacken mit einem an die Linearführungsschiene angepassten Gleitstück 21 versehen ist, wobei das Antriebsende des Antriebsmechanismus mit einem oberen Ende des Keiltragelements verbunden ist; wobei das Keiltragelement durch die Antriebseinheit antreibend nach oben bewegbar ist, wobei durch das Zusammenwirken des Keilblocks mit den Spreizbacken die Spreizbacken gespreizt werden, um den Stator expandierend zu spannen und so ein Greifen des Stators zu bewirken.

The specific embodiments of the present structural view are described below with specific embodiments. One skilled in the art can easily understand the advantages and effects of the present structural view from the contents disclosed in this description. The present teachings can be embodied in other different forms, which can be variously modified and changed without departing from the scope of the present structural view. Examples:

• A gripping device for a stator of a housing, as in the 1 to 5 shown includes an assembly seat 1 , Expanding jaws 2nd , a wedge support element 3rd and a drive mechanism 4th that moves the wedge support member up and down, the wedge support member having a plurality of wedge blocks 31 at intervals in its circumferential direction, the thickness of the wedge block increasing from top to bottom, the thickness of the expanding jaws decreasing from top to bottom, the side of the wedge block opposite to the expanding jaws having a linear guide rail 32 is provided, wherein the inner surface of the expanding jaws with a slider adapted to the linear guide rail 21 is provided, the drive end of the drive mechanism being connected to an upper end of the wedge support member; wherein the wedge support element can be driven to move upward by the drive unit, the expansion jaws being expanded by the interaction of the wedge block with the expansion jaws in order to expand the stator in an expanding manner and thus to effect gripping of the stator.

As in the 2nd and 3rd shown, the gripping device is further with a guide post 5 provided to increase the ease of up and down movement of the wedge support member, the wedge support member having a cavity in its center 32 has, wherein the guide post is in the cavity.

As in 1 shown, the gripping device further comprises a mounting frame 6 and a pedestal 7 , with the expanding jaws between the base plate 61 the mounting frame and the base are arranged.

There is a protective plate between adjacent expanding jaws 8th arranged.

In the present embodiment, the outer peripheral surfaces of the expanding jaws are arcuate surfaces.

There is a boundary block on one edge of the mounting frame 62 arranged, wherein an axial limitation of the stator is achieved by pressing the limitation block against an upper flank of the stator or a step surface on the stator circumference so that the stator does not move when gripped.

Three expansion jaws are provided, and three wedge blocks are also provided. The stability is highest with three-point gripping, whereby the number of expanding jaws and wedge blocks is variable, but at least two of them can of course also be used.

As in 1 shown, the drive mechanism is a cylinder, the drive end of the cylinder having a floating port 41 is provided, wherein a bottom plate of the mounting frame with a through hole 611 is provided with an upper portion of the wedge block passing through the through hole and connected to a floating port of the cylinder to ensure the coaxiality of the wedge support member and a drive end of the cylinder, the floating port being prior art and therefore not described in detail.

In the present embodiment, the upper end of the guide post is mounted on the bottom plate of the support frame and the lower end of the guide post is mounted on the base.

• Das Keiltragelement wird durch einen Zylinder nach oben bewegt, wobei die durch den Keilblock vorgesehene Linearführungsschiene mit dem auf den Spreizbacken vorgesehenen Gleitstück zusammenwirkt, wobei die Dicke der Spreizbacken von oben nach unten abnimmt, weil die Dicke des Keilblocks von oben nach unten zunimmt. Beim Aufwärtsbewegen des Keiltragelements spreizen sich die Spreizbacken daher radial, um den Stator auszudehnen und dadurch ein Greifen des Stators zu bewirken; durch die von dem Zylinder angetriebene Abwärtsbewegung des Keiltragelements nimmt aufgrund der von oben nach unten größer werdenden Dicke des Keilblocks die Dicke der Spreizbacken von oben nach unten ab und die Spreizbacken können sich zur Vorbereitung des nächsten Vorgangs aneinander annähern.

The mode of operation and the process according to the teachings are as follows:

• The wedge support element is moved upwards by a cylinder, the linear guide rail provided by the wedge block interacting with the slider provided on the expanding jaws, the thickness of the expanding jaws decreasing from top to bottom because the thickness of the wedge block increases from top to bottom. When the wedge support element is moved upward, the expansion jaws therefore expand radially in order to expand the stator and thereby cause the stator to grip; due to the downward movement of the wedge support element driven by the cylinder, the thickness of the expanding jaws decreases from top to bottom due to the increasing thickness of the wedge block from above and the expanding jaws can approach each other in preparation for the next process.

The above description is only an exemplary embodiment of the present teachings and is not intended to limit the scope of the present teachings.

Claims (8)

Gripping device for a stator of a housing, characterized in that the gripping device has a mounting seat (1), a number of expanding jaws (2), a wedge support element (3) and a drive mechanism (4) which moves the wedge support element (3) up and down , wherein the wedge support element (3) is provided with a plurality of wedge blocks (31) at intervals in its circumferential direction, the thickness of the wedge block (31) increasing from top to bottom, the thickness of the expanding jaws (2) from above lower down the side of the wedge block (31), which lies opposite the expanding jaws (2), is provided with a linear guide rail (32), the inner surface of the expanding jaws (2) being provided with a sliding piece (21) adapted to the linear guide rail (32) wherein the drive end of the drive mechanism (4) is connected to an upper end of the wedge support member (3); wherein the wedge support element (3) driven by the drive unit can be moved upwards, whereby the interaction of the wedge block (31) with the expanding jaws (2) spreads the expanding jaws (2) in order to expand the stator and thus gripping the stator to effect. Gripping device for a stator of a housing Claim 1 , characterized in that the gripping device is further provided with a guide post (5) to increase the ease of the up and down movement of the wedge support element (3), the wedge support element (3) having a cavity (33) in its center, wherein the guide post (5) is in the cavity (33). Gripping device for a stator of a housing Claim 1 , characterized in that the gripping device further comprises a mounting frame (6) and a base (7), the expanding jaws (2) being arranged between the base plate (61) of the mounting frame (6) and the base (7). Gripping device for a stator of a housing Claim 1 , characterized in that a protective plate (8) is arranged between adjacent expanding jaws (2). Gripping device for a stator of a housing Claim 1 , characterized in that the outer peripheral surfaces of the expanding jaws (2) are arcuate surfaces. Gripping device for a stator of a housing Claim 1 , characterized in that a limiting block (62) is arranged on an edge of the mounting frame (6), axial limitation of the stator being achieved by pressing the limiting block (62) against an upper flank of the stator or a step surface on the circumference of the stator. Gripping device for a stator of a housing Claim 1 , characterized in that three expanding jaws (2) are provided and that three wedge blocks (31) are also provided. Gripping device for a stator of a housing Claim 3 , characterized in that the drive mechanism (4) is a cylinder, the drive end of the cylinder being provided with a floating connector (41), a bottom plate of the mounting frame (6) being provided with a through hole (611), an upper portion of the Wedge blocks (31) passes through the through hole (611) and is connected to the floating connection (41) of the cylinder.

Images